Starting with the 2013 Ford Fusion, the Flat Rock Assembly Plant, formerly Auto Alliance International (AAI) will begin producing the Ford Fusion in the U.S. Ford celebrates opening of a new era at Flat Rock Assembly PlantFord Motor Company and its employees today are opening a new era at the Flat Rock Assembly Plant, complete with a new name, 1,200 additional hourly jobs coming next year and plans to produce the 2013 Ford Fusion midsize sedan. Previously known as AutoAlliance International, Flat Rock Assembly is now under the full management control of Ford. Ford celebrates opening of a new era at Flat Rock Assembly PlantFord Motor Company and its employees today are opening a new era at the Flat Rock Assembly Plant, complete with a new name, 1,200 additional hourly jobs coming next year and plans to produce the 2013 Ford Fusion midsize sedan. Previously known as AutoAlliance International, Flat Rock Assembly is now under the full management control of Ford.